I am no lawyer but LCA filing/arriving has nothing to do with starting work with a new company. LCA filing is a standard procedure to determine what wage is to paid to you in the State/County you will be working in.

You can start work as soon as your H-1b Transfer Receipt comes through.

Did you company file the Transfer in Premium? It should come through pretty soon. Even if you get a query (god Forbid) you can still continue working as long as the query is timely responded to by your lawyer.

Yes it is premium processing. Hmm. Right now only LCA has been filed. So cannot work?

Mu H1 transfer has been filed by a research company in the US from another research company.
LCA file date with DOL: sept-30,2010.

My lawyer says it takes about 7-10 business days for them to receive approval of LCa and then they will file the H1- petition. After about 5-10 days when I receive the petition receipt notice from USCIS, I can start working for the new employer.

My question is since all of the processing is in Regular processing, does the time to receive the "receipt" notice depend on regular/premium??

Second question is I want to give 2 weeks notice the day I receive the receipt notice to the old employer. Can there be a gap between i stop working for old employer and hence stop getting paid and start working for the new employer. I am only talking about 2 weeks maximum gap, but want to know if this jeopardizes the approval of the H1 petition with the new employer.So in summary does gap in getting paid while I join the new employer, affect the H1 petition decision